package com.example.springbootfoodsafety.interceptor;

import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("进入拦截器");
        if(request.getSession().getAttribute("user")==null)
                response.sendRedirect("/login.html");


        return HandlerInterceptor.super.preHandle(request, response, handler);
    }
}
